This is a discussion on DYI: Pink injectors on 02-03 WRX within the Engine Performance forums, part of the Tutorials & DIY category; shouldnt you turn your key to "on" to prime the injectors to make sure they are functioning? i remember reading ...

shouldnt you turn your key to "on" to prime the injectors to make sure they are functioning? i remember reading something like that. if someone could fill in that part id be happy!

If you turn it to the "on" position, you're only causing the fuel pump to run for a second. I don't believe you could gather any injector info by just doing that. I pulled inside fuse #11 (ignition). I turned the motor over 6-8 times, cranking it for 4-5 seconds each time. This causes the new turbo to be primed with oil & you can check the injectors for any fuel leakage since I replaced them at the same time. I did the engine cranking 3 times, then checked the injector areas for any fuel smell. I didn't smell anything so I did it a few more times. After that I replaced the fuse & she started right up! Make sure you load the correct map you will be running first though.

The first rule of the Faction is...DO NOT TALK ABOUT THE FACTION.NYGIANTS
Hybrid Faction #19
Blobeye Syndicate #19Mods

If you turn it to the "on" position, you're only causing the fuel pump to run for a second. I don't believe you could gather any injector info by just doing that. I pulled inside fuse #11 (ignition). I turned the motor over 6-8 times, cranking it for 4-5 seconds each time. This causes the new turbo to be primed with oil & you can check the injectors for any fuel leakage since I replaced them at the same time. I did the engine cranking 3 times, then checked the injector areas for any fuel smell. I didn't smell anything so I did it a few more times. After that I replaced the fuse & she started right up! Make sure you load the correct map you will be running first though.

definitely use a safe map, as stated above. well, a safe map if youre running large injectors and dont have a map to match them already. just need something to get you to your tuner w/o fouling everything up.

What sort of performance upgrade/boost did you notice? Any? I want to get the Deatchwerks Injectors for my regular WRX and I am not sure if it's worth the $? I don't have many other upgrades (Apex'i grounding, Greddy exhaust, Blitz TT, Perrin lightweight crank pulley, etc)... Should I not waste my time with this upgrade until I've put some more $ into other areas of the car (i.e. handling, COBB software, etc)?

What sort of performance upgrade/boost did you notice? Any? I want to get the Deatchwerks Injectors for my regular WRX and I am not sure if it's worth the $? I don't have many other upgrades (Apex'i grounding, Greddy exhaust, Blitz TT, Perrin lightweight crank pulley, etc)... Should I not waste my time with this upgrade until I've put some more $ into other areas of the car (i.e. handling, COBB software, etc)?

Higher flowing injectors are usually only needed for turbo upgrades. Do it when you decide what turbo you want to upgrade to down the road. Depending on what turbo you get will determine what flow rate you'll need. You will need some sort of engine management whenever you replace the downpipe or get bigger turbo/injectors. I would look into replacing your uppipe with a catless version for a cheap upgrade that helps you to build boost about 500 rpms sooner. Check out these links for more info. Injector sizing chart
I highly suggest reading most of the links found here. Enjoy.Unabomber's Manifesto

The first rule of the Faction is...DO NOT TALK ABOUT THE FACTION.NYGIANTS
Hybrid Faction #19
Blobeye Syndicate #19Mods

Higher flowing injectors are usually only needed for turbo upgrades. Do it when you decide what turbo you want to upgrade to down the road. Depending on what turbo you get will determine what flow rate you'll need. You will need some sort of engine management whenever you replace the downpipe or get bigger turbo/injectors. I would look into replacing your uppipe with a catless version for a cheap upgrade that helps you to build boost about 500 rpms sooner. Check out these links for more info. Injector sizing chart
I highly suggest reading most of the links found here. Enjoy.Unabomber's Manifesto

going to attempt this install along with plugs, exhaust manifold, upipe, turbo and ecbs in about a week. lets hope i can get it all done in 1 day.

What did you do man, win the lottery? LOL that sounds like a bunch of fun stuff to put on. What turbo you going with? What kind of engine management you running for all this stuff? And what EBCS did you go with?

What did you do man, win the lottery? LOL that sounds like a bunch of fun stuff to put on. What turbo you going with? What kind of engine management you running for all this stuff? And what EBCS did you go with?

ha! well i started out doing TBE and Upipe but once i got in there i noticed the stock exhaust manifold was pretty rusted and starting to crack. so i decided to wait on the upipe install untill i could replace the mani.

then i found a good deal on a used 13k mile vf34 so i said screw it! bought some sti pink injectors, the vf34, a ebay tmic, grimspeed p&p stock manifold/crosspipe and some 1 step colder plugs. i also went with the grimspeed ecbs.

my girl wants to kill me. shes so mad i just keep spending money on this car LOL!

the stock tdo4 on my engine has 115k miles and i think is on its way out.

o yea. ive had the cobb ap v2 for awhile but im thinking about selling it once i can find a decent pro tunner around me. atm im usein clark e-tunes.

ha! well i started out doing TBE and Upipe but once i got in there i noticed the stock exhaust manifold was pretty rusted and starting to crack. so i decided to wait on the upipe install untill i could replace the mani.

then i found a good deal on a used 13k mile vf34 so i said screw it! bought some sti pink injectors, the vf34, a ebay tmic, grimspeed p&p stock manifold/crosspipe and some 1 step colder plugs. i also went with the grimspeed ecbs.

my girl wants to kill me. shes so mad i just keep spending money on this car LOL!

the stock tdo4 on my engine has 115k miles and i think is on its way out.

o yea. ive had the cobb ap v2 for awhile but im thinking about selling it once i can find a decent pro tunner around me. atm im usein clark e-tunes.

Man, that's awesome and sounds like fun to do all at once. You're going to be put back in your seat compared to stock.

That's a really good idea to get a Pro-Tune soon. You'll get better/safer/more power and smoothness, and you can sell that AP for some cash. I never understood paying $700 for an AP

thats nothing. im doing all of this and then some when im ready, just need money for the tune beforehand. i got 18G turbo, 750's, new header, EWG up-pipe, 38MM EWG (w/1 bar spring), and NGK 1-step plugs to throw in my car. it should be cake tho, i have a good friend handy whose rex has been 20G'd for a while now, and 3-4 friends who are all mechanics. gladly, i have a TXS fmic on my car already. i hope to do this by the end of the month. fingers are crossed lol.

Bumpin' this one for a question. Must a new "donut" grommet be used when replacing the injectors? The "donut" grommet is at the nozzle end of the injector. It can be seen on one of the "pinks" in the picture that is half pink!

I imagine that these frequently get stuck in the hole, so pulling them out may be a pain.

Bumpin' this one for a question. Must a new "donut" grommet be used when replacing the injectors? The "donut" grommet is at the nozzle end of the injector. It can be seen on one of the "pinks" in the picture that is half pink!

I imagine that these frequently get stuck in the hole, so pulling them out may be a pain.

Any time you pull injectors, or replace them for that matter, you should be purchasing new gaskets. They can easily become worn and cracked or even mishaped and leak, don't take the chance, just order new ones.

Any time you pull injectors, or replace them for that matter, you should be purchasing new gaskets. They can easily become worn and cracked or even mishaped and leak, don't take the chance, just order new ones.

I've read that it would be OK to reuse the old ones. However, I agree that replacing them would be best for good measure. The donut gasket I described is technically called the injector insulator, per the shop manual. I figure these couldn't cost more than a couple bucks at the Subie dealer. Thanks.

vBulletin Message

Errors

The following errors occurred with your submission

Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.If you do not want to register, fill this field only and the name will be used as user name for your post.

Password:

Confirm Password:

Please enter a password for your user account. Note that passwords are case-sensitive.

Email Address:

Please enter a valid email address for yourself. We strongly suggest that you stay away from using aol, yahoo, msn, and hotmail accounts. Sometimes the mail server blocks the emails from our server. As a result you will not receive any notifications including the confirmation email.

Log-in

User Name:

Password:

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.